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Assignee3M Innovative Properties Company
InventorsPatrick Darby Hyde, Roy Wong, Dennis Louis Krueger, Robert W. G. Shipman, David James Yarusso, Felix P. Lau, Eumi Pyun, Pamela S. Tucker
Estimating the term…
A pressure-sensitive adhesive comprising a blend of at least two components, wherein the first component is at least one pressure-sensitive adhesive and second component is at least one thermoplastic material, wherein the components form a blended composition having more than one domain and, wherein one domain is substantially continuous (generally, the pressure-sensitive adhesive) and the other domain is substantially fibrillous to schistose (generally, the thermoplastic material). The second component can be (a) at least one thermoplastic elastomer, (b) at least one elastomer with a tackifying resin or (c) at least one elastomer.
A pressure-sensitive adhesive layer comprising a blend of at least one pressure-sensitive adhesive component and at least one thermoplastic, elastomeric, tackified elastomeric, or thermoplastic elastomeric material component being immiscible with the pressure-sensitive adhesive component at room temperature, said layer having an anisotropic morphology comprising two axes perpendicular to each other, both parallel to the main surface layer, said axes comprising a longitudinal axis in the down-web direction and a transverse axis in the cross-web direction, said morphology further comprising at least two distinct domains, a first substantially continuous domain comprising the at least one pressure sensitive adhesive component and a second domain comprising the at least one thermoplastic, elastomeric, tackified elastomeric, or thermoplastic elastomeric material component being fibrillose to schistose in nature and oriented along the down-web direction.
A pressure-sensitive adhesive electrical tape comprising a polyvinyl chloride substrate or a substrate film of a blend of ethylene-vinyl acetate and ethylene-propylene-diene rubber and on the substrate, a pressure-sensitive adhesive layer comprising a blend of about 5 to 95 weight percent of an acrylic pressure-sensitive adhesive and about 5 to 95 weight percent of a thermoplastic elastomeric block copolymer, said thermoplastic elastomeric block copolymer being immiscible with said pressure-sensitive adhesive, said layer having an anisotropic morphology comprising two axes perpendicular to each other, both parallel to the main surface layer, said axes comprising a longitudinal axis in the film-forming direction and a transverse axis in the cross-web direction, said morphology further comprising at least two distinct domains, a first substantially continuous domain comprising the at least one pressure sensitive adhesive and a second domain comprising the thermoplastic elastomeric block copolymer being fibrillose to schistose in nature and oriented along the film-forming direction.
Dependencies are inferred from the claim text.